PDF malware analysis — malicious · 239398f2cd4e9d37

MALICIOUS

PDF

12.3 KB Created: 2010-03-18 12:50:26 Authoring application: Lecjebegidirejpa (via Sevalibgobo)

MD5: 285e4b04f347a32ae64659e566c2fd06 SHA-1: 6bdc2c130532bd8848cb56543e1f8e393a4974cb SHA-256: 239398f2cd4e9d37f760d690e48ca549e71626ce15e543e944b92983e6b2a05e

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV specifically identifying it as 'Pdf.Dropper.Agent-7239491-0'. The presence of embedded JavaScript, indicated by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics, suggests the document is designed to execute malicious code. This script likely acts as a dropper, downloading and executing a second-stage payload, which is a common technique for malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Dropper.Agent-7239491-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7239491-0
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0020_000.js` `2445fd61cdc884d994970ed55f9e8e7f050974a5cf9635224b66e66da8d84b77`	pdf-javascript-stream	PDF /JS object 20 at offset 0x2AA5	2786 bytes

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